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Single shot airsoft

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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Single shot airsoft

Unread postAuthor: farcticox1 » Sun Jul 09, 2017 3:15 pm

Making a new post for my airsoft project, progressing slowly but surely, bit of assembly work this afternoon in the workshop.

66 (1).jpg
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Wed Jul 12, 2017 7:16 pm

As usual I had a change of plan, ditched the burst fire, going for single shot, as I originally intended. Found a sweet piece of pre-drilled 20mm round bar which I opened up to 10mm ID in the drill press, (oh for a lathe)

Bolt open (no hole in barrel yet)

77 (1).jpg


Closed, locking ramp puts pressure on O ring as I want the barrel hole close to the end, the plate fixing bolts are in slots so I can adjust the pressure on the Oring

77 (2).jpg
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Re: Single shot airsoft

Unread postAuthor: jackssmirkingrevenge » Thu Jul 13, 2017 4:02 am

Do you plan to use this for airsoft games or is it just for hole punching?
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Thu Jul 13, 2017 4:31 am

Just for fun
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Re: Single shot airsoft

Unread postAuthor: Cthulhu » Thu Jul 13, 2017 5:31 am

This is much more advanced than the single shot airsoft guns my buddies and I made back in the day!

We used to use 100mL syringes with a pipe epoxied to the nozzle and a bunch of rubber bands attached to the plunger to replicate Muskets.
Push an airsoft bb with a wad down the barrel, pull back the plunger and poof!
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Fri Jul 14, 2017 6:03 pm

Made a clamp today for the front section of the gun to secure the barrel to the pvc chamber

clamp (2).jpg


clamp (3).jpg



M4 thread on top for front sightpost
clamp (1).jpg
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Sun Jul 23, 2017 4:30 pm

PVC painted flat black, mostly assembled now, going to mount a small 4x scope I have on it. Connector on the end of the barrel is to attach extension/silencer, about 8" long.

20170723_160400.jpg


20170723_160429.jpg
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Re: Single shot airsoft

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Re: Single shot airsoft

Unread postAuthor: jackssmirkingrevenge » Mon Jul 24, 2017 4:49 am

Looks good!

Since you are well versed with high strength metal constriction should consider a move to higher pressures in the 450-850 range using paintball bottles, supersonic airsoft BBs are more than feasible.
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Wed Jul 26, 2017 6:20 pm

Some mods in progress, changed bolt to left side, I'm right handed but find it easier to load with my left. Mounting scope bracket, making dummy flash hider.

20170726_183901.jpg




Did some test firing and found a leak, all in pieces now :cry:
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Thu Jul 27, 2017 5:43 pm

Back together now, works perfectly, just need to get scope, sights and laser set up.

20170727_190253.jpg
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Fri Jul 28, 2017 6:47 pm

I fired a good 100 shots through it and the accuracy is terrible, just everywhere, even at 10'. I'm hoping it's the compression fitting I put on the end of the barrel has caused a small ridge inside and is messing it up, gonna cut the last 1" off the barrel and see if it fixes it :idea:
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Re: Single shot airsoft

Unread postAuthor: Cthulhu » Sat Jul 29, 2017 3:44 am

farcticox1 wrote:I fired a good 100 shots through it and the accuracy is terrible, just everywhere, even at 10'. I'm hoping it's the compression fitting I put on the end of the barrel has caused a small ridge inside and is messing it up, gonna cut the last 1" off the barrel and see if it fixes it :idea:



If it doesn't fix it, consider adding a hop up like a real airsoft gun or looking towards a heavier bb. Those are usually the most common issues with accuracy for airsoft guns.
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Sat Jul 29, 2017 10:52 am

I like the idea of hop up, now how to make one :idea:

Would a nylon tipped set screw work, or does it need to softer like rubber ?

played with it a bit more, using 0.2g over 0.12g BB's helps a bit, also extending the barrel helps a lot, seems like there is so much extra air coming out behind the BB that it pushes it off course. quite a loud crack and recoil with the short barrel, quiter and smoother with the longer barrel.

long barrel.jpg
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Re: Single shot airsoft

Unread postAuthor: hectmarr » Sat Jul 29, 2017 6:20 pm

looks great! :bounce: :bounce: Do you have a video? I would like very much to see how his creation shoots. Good project. I will try something similar in the future, this idea has been around for a long time.
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Re: Single shot airsoft

Unread postAuthor: farcticox1 » Sat Jul 29, 2017 6:35 pm

I'll try and do one when it's completely finished :cheers:
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